Step 1:
The first step to converting 115511.20778638 to a fraction is to re-write 115511.20778638 in the form p/q where p and q are both positive integers. To start with, 115511.20778638 can be written as simply 115511.20778638/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 115511.20778638, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 115511.20778638/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 115511.20778638/1 each by 100000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 115511.20778638 as a fraction:
462045/4 / 1